S.M. Roopan et al. / Journal of Molecular Liquids 293 (2019) 111509
11
[19] D. Yazdani, A.A. Zinatizadeh, M. Joshaghani, One-step synthesis of NiO nano-
photocatalyst by wire explosion process and its application in photocatalytic degra-
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3.12. Influence of pH and NiO catalyst on degradation studies
The photo catalytic degradation of CR dye and 4-nitro phenol
investigated using NiO NPs as a catalyst. In degradation studies,
the amount of catalyst and pH also considerable as one of the im-
portant factor. To optimize the parameters we have changed the
catalyst quantity (10, 30, and 50 mg), and pH of the solution (5,
7, and 9). Same parameters applied in both CR and 4-nitro phenol
degradation studies. It was observed that while increasing the cat-
alyst, % of degradation also increased. Also, the pH at acidic condi-
tion (pH = 5) showing good degradation efficiency. Fig. 17
represents the effect of the pH and catalyst in both degradation
studies. It was interesting that the no considerable change in both
degradation studies.
4. Conclusion
[25] C. Tamuly, I. Saikia, M. Hazarika, M. Bordoloi, N. Hussain, M.R. Das, K. Deka,
Bio-derived ZnO nanoflower: a highly efficient catalyst for the synthesis of
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extract of Calotropis procera latex, Mater. Lett. 65 (2011) 610–613, https://doi.org/
In summary, we have developed a CGL mediated NiO NPs by eco-
friendly method without using any hazardous chemicals. The degrada-
tion study results revealed that CGL mediated NiO NPs shows consider-
ably enriched photocatalytic activity.
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